Part 3: Movement of the Earth
Kate Humble and Iain Stewart visit Kalapana, a Hawaiian town destroyed 20 years ago by lava flows from the island's volcanic menace Kilauea. They also explore the connections between volcanoes, earthquakes and tsunamis, and Iain visits the Bay of Naples to explain the forces responsible for the most devastating eruptions. Plus, Kate descends 150m into the mouth of a dormant volcano in Iceland